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2-178 SPARC Enterprise Mx000 Servers XSCF User’s Guide December 2010
By default, the Oracle Solaris OS automatically sets a domain’s CPU operational mode each
time the domain is booted based on the types of processors it contains. It does this when the
cpumode variable – which can be viewed or changed by using the setdomainmode(8)
command – is set to auto.
You can override the above process by using the setdomainmode(8) command to change
the cpumode from auto to compatible, which forces the Oracle Solaris OS to set the
CPU operational mode to SPARC64 VI Compatible Mode on reboot. To do so, power off the
domain, execute the setdomainmode(8) command to change the cpumode setting from
auto to compatible, then reboot the domain.
TABLE 2-34 shows CPU configuration for domain at DR operations and the CPU operational
mode. The system board (XSB) which can be added by DR is decided by the CPU
operational mode currently set to the domain, which is as follows:
For details of the CPU operational mode and the DR operation, see the Dynamic
Reconfiguration User’s Guide.
DR operations work normally on M4000/M5000/M8000/M9000 server domains running in
SPARC64 VI Compatible Mode. You can use DR to add, delete or move boards with any of
the processor types, which are all treated as if they are SPARC64 VI processors. The M3000
servers do not support DR operations.
DR also operates normally on domains running in SPARC64 VII Enhanced Mode, with one
exception: You cannot use DR to add or move into the domain a system board that contains
any SPARC64 VI processors. To add a SPARC64 VI processor you must power off the
domain, change it to SPARC64 VI Compatible Mode, then reboot the domain.
In an exception to the above rule, you can use the DR addboard(8) command with its -c
reserve or -c assign option to reserve or register a board with one or more SPARC64
VI processors in a domain running in SPARC64 VII Enhanced Mode. The next time the
domain is powered off then rebooted, it comes up running in SPARC64 VI Compatible Mode
and can accept the the reserved or registered board.
TABLE 2-34 CPU configuration for domain at DR operations and the CPU operational mode
Domain CPU configuration Value of CPU Mode Current CPU operational mode
CPU configuration of a system board
which can be added by DR operation
SPARC64 VII+/VII auto SPARC64 VII enhanced
mode
SPARC64 VII+/VII
SPARC64 VII+/VII compatible SPARC64 VI compatible
mode
Any CPU configuration
SPARC64 VII+/VII
and SPARC64 VI
auto or
compatible
SPARC64 VI compatible
mode
Any CPU configuration
SPARC64 VI auto or
compatible
SPARC64 VI compatible
mode
Any CPU configuration
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